Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f101b1ef4cd3d9…

MALICIOUS

PDF

34.2 KB Created: 2021-06-20 14:02:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9b5356640559a2f68d39f57c42613edd SHA-1: 7d6bb6bbd45f5fbc2fcf42d8dce01973eda0068d SHA-256: 04f101b1ef4cd3d9333994005087175b559a3cb2b3cf2f038d2ee366f65d4ae6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and cheats. The document body explicitly mentions 'Redline Hacks Download Roblox' and includes a call to action, indicating a lure to download potentially malicious content. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/redline-hacks-download-roblox-game-hack In PDF document text
    • http://unifieo.br/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-cheat-engine-62-noclip_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/roblox-assassin-hacks-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/roblox-cheat-engine-hacks-admin_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-vip-on-roblox-fashion-famous_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-pin-hack_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/roblox-hacked-download-apk_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://unifieo.br/images/free-robux-hack-generator-club-no-verification_GM431946152.pdfIn PDF document text
    • http://unifieo.br/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E47 22436 bytes
SHA-256: fcdff3939b5bfe57fea684c0358b74cbfb9e8fded74daaaf8fe3e48b0f60e5c2
font_01_sfnt_off00005ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 19284 bytes
SHA-256: 96c2f9959b0e090224172d69122a963498dffdfbc6e82025c9d572273e9ccbda

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